Jan Mayen weather in September 2025

Q: How cold is it in Jan Mayen in September?

Daytime temperatures usually reach 3°C in Jan Mayen in September, falling to -1°C at night.

Q: How sunny is it in Jan Mayen in September?

There are normally 2 hours of bright sunshine each day in Jan Mayen in September - that's 14% of daylight hours.

Q: Is the sea cold around Jan Mayen in September?

The average sea temperature around Jan Mayen in September is 5°C.

Q: Does it rain in Jan Mayen in September?

There are usually 19 days with some rain in Jan Mayen in September and the average monthly rainfall is 88mm. Rain may fall as snow in this month.

Expect 3°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Jan Mayen in September. Check more long-term weather averages for Jan Mayen in September before you book your next holiday to Jan Mayen in 2025/2026.

3
3°C max day temperature
2
2 hours of sunshine per day
19
19 days with some rainfall
-1
-1°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
88
88 mm of monthly rainfall
1
1 (Low) UV index
5
5°C sea temperature

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The September weather guide for Jan Mayen shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How cold is it in Jan Mayen in September?

Daytime temperatures usually reach 3°C in Jan Mayen in September, falling to -1°C at night.

How sunny is it in Jan Mayen in September?

There are normally 2 hours of bright sunshine each day in Jan Mayen in September - that's 14% of daylight hours.

Is the sea cold around Jan Mayen in September?

The average sea temperature around Jan Mayen in September is 5°C.

Does it rain in Jan Mayen in September?

There are usually 19 days with some rain in Jan Mayen in September and the average monthly rainfall is 88mm. Rain may fall as snow in this month.

Jan Mayen September sunrise & sunset times

Browse the sunrise and sunset times for Jan Mayen in September 2025. Select a month to view Jan Mayen sunrise and sunset times for the next 12 months.

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